What is the best way to store the tent,...
What is the best way to store the tent, stuffed, rolled loosely or folded loosely?
Once it is air dried you can store it in the stuff sack and that should be fine. I've stored them loosely in a duffle as well to prevent creasing if I know I won't be using it for a while.
Stuff it, that is why they come in a stuff sack.